Automatic signal-operator.



E. R. GILL.

' AUTOMATIC SIGNAL OPERATOR.

APPLICATION FILED 0GT.17, 1908. 1,024,444. Y Patented Apr. 23, 1912.

6 SHEETS-SHEET l.

3] mm Wfoz III Elihu" mm:

E. R. GILL.

AUTOMATIC SIGNAL OPERATOR.

APPLICATION FILED OOT.17, 1908.

Patented Apr. 23,1912.

6 SHEETS-SHEET 2.

5 mm W606 E. B. GILL.

AUTOMATIC SIGNAL OPERATOR. APPLIOA'I'ION FILED OCT. 17, 190B.

- 1,024,444, Patented Apr. 23; 1912 6 SHEETS-SHEET E. R. GILL. AUTOMATICSIGNAL OPERATOR.

APPLICATION FILED OUT. 17, 1908. 1,024,444, Patented Apr. 23, .2912.

6 SHEETSSHEET 5.

E. R. GILL. AUTOMATIC SIGNAL OPERATOR.

.AFPLIOATION FILED bflT. 17, 1908.

PatefitedApr. 23, 1912.

B SHEBTSw-SHEET 6.

I 'EDWIN R. GILL, OF YONKERS,

' city of Yonkers,

U ITED, STATES PATENT orrron.

NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

HOWARD E. MERRELL, OF NEW YORK, N. Y., AND ORLO J. HAMLIN, OF SMETHPORT,

. PENNSYLVANIA.

AUTOMATIC SIGNAL-OPERATOR.

To all whom it may concern:

Be it known that I, citizen of the United States, residing in the countyof Westchester, and State of New York, have invented a certain new anduseful Improvement in Automatic Signal-Operators, of which the followingis a specification.

- The lation to automatic means for operating high speed selectivesignals for telephones, telegraphs and the like, and it may be usedwherever a succession of long and short electrical impulses is to beproduced under circumstances permitting permutation of the order of suchimpulses.

Many devices have been hithe'rto contrived whereby a number of signalsat different points may be selectively operated over a single wirewithout interference among themselves, and among these an entire classis recognized wherein a movable contact piece is impelled forwardrapidly step by step, the mechanism being so arranged that pauses may beproduced after any one step forward, and so that each pause will causea. signal to operate at only one station. By pausing after theappropriate forward step, the operator is able to select whicheverstation he pleases and to call that station without disturbing any otherupon the line. For convenience I shall refer' herein to selectivesignaling means of this description as high speed signals.

My presentinvention is not concerned with the particular construction ofany high speed selective signalv and I have not illustrated such asignal herein, but its ob ject isto supply means whereby merelydepressing appropriate buttons and starting an automatic circuit breakerwill produce'a succession of electric impulses on a main line includingpauses so'ordered as to cause those stations corresponding to thebuttons depressed to be called, and no others. It is to be understood,however, that mydevices may be put-to otherthan the above uses theaccompanying Specification of Letters Patent. Application filed October7, 1903. Serial No. 4

EDWIN R. GILL, a.

present invention has particular re-- "device, Fig. 9

a the freeing v impulses.

Patented Apr. 23, 1912 and rotary switch, Fig. 2 is a vertical sectionon 22 in Fig. 1 Fig. 3 is a perspectiye of the escapement and arrestingmeans, Fig. 4 is a partial sectional view on 44; in Fig. 6, Fig. 5 is asimilar section on 55 in Fig. 4, Fig. 6 is an end view of the keyboardremoved from its casing, Fig. 7 shows a top view of the keyboard andselecting switch, showing the general circuit'arrangement in diagram,Fig. 8 is a side view of the freeing is an end view of the same, Fig. 10is a partial side view taken oppo-' site to F 9 and Fig. 11 showsadetail of device ratchet wheel. Referringfirstto Fig. 7, the main lineupon which are connected all of the selective signals or other devicesintended to receive the impulses produced is shown at 10,

and the local relay controlling, the main circuit at 11. The preferredarrangement shown comprises four mechanisms which cooperate in producingthe necessary variable and controllable series of long and short Theseare First :-An automatic switch normally producing a succession ofimpulses in rapid succession on the main line. This I term an a1 "omaticsender.'

zcond :Means for producing a pause in the sender in any desired positioncorresponding to production of an electric impulse. .This I term theautomatic arrester.

Third :Mean for selecting and determining the particular positions ofthe sender at which the arrester ative. This is the pause controller.

Fourth :Automatic means whereby, after an appropriately timed pause, theaction of the arrester is discontinued and .the sender is freed. This isthe freeing device.

In addition to these, I prefer also to employ means associated with thekeyboard for preventing operation of the arrester, and this I term thelin setting means or device.

I may also use, assh'own, a checking device in connection with thefreeing device, whereby the action of' the whole group may be watchedduring operation to make sure of its acting properly. The automaticsender maybe anj xorm of switch whereby the electrical condition. of themain line may be'changed a number of times in succession, and for thispurpose I prefer to use a circuit closing device.

becomes oper-- whenever brought together.

" The operating clockwork comprises a mam spring 15, which tends alwaysto turn the main shaft 16 in the direction indicated b, the arrow on thegear wheel 17 (see Fig. 1%. 3 This wheel is fast on the shaft 16, and,through a train of gears shown in dotted l ines ,'--it impels a coarselytoothed wheel 18.

The spring terminal 13 carries a finger 19, so placed with relation tothe wheel 18 that, as the latter turns with the arrow shown upon it inFig. 1, said finger, and the terminal 13 with it, are raised by eachtooth of the wheel 18 in succession, thus closing and opening' the relaycircuit at 12 at regular intervals. For the purposes of my completesystem, the wheel 18 should have two more-teeth than the total number ofselec- .tive signals for which the complete apparatus is designed.

The motion of the clockwork is controlled in a wellknown manner by anescapement 20 comprising an extension 21 for a purpose describedhereinafter. The main shaft 16 can beturned by a handle 22 and carrieswith it'an arc-shaped stop arm 23 against I which a stop pin.24 on thewheel 18 normally bears. In operating the device, the handle 22 isturned oppositely to the arrow in Fig. 1, until the stop arm strikes thepin 25. This frees the wheel 18, which turns with the arrow marked on itin Fig. 1, and the movements of the various shafts are so related that,when the wheel 18 has made one revolution, the pin 24 again strikes thestop arm and stops the clockwork. The frame of the clockwork is fixed.to a metal strip 26 hich connects, by the fiat terminal 27 and wire 28,with the battery 14. The insulated terminal or contact piece 12 isconfiected by wires 29, 30 to one side of the relay 11? The mechanismand connections thus far described suffice for producing a rapidsuccession of electrical impulses on the main line. In order to makethese useful in selectively operating the type of signals heretoforementioned, however, it is necessary to provide means whereby a longimpulse is produced at the proper moment ormoments for calling thedesired station or stations. The automaticarrester is used forthispurpose. In the form shown this element of my invention takes theform shown in Figs.

1 and 3, wherein an electro-magnet 31 is provided which controls apivoted armature 32, normally kept away from the mags net pole by thesprings 33. This armature carries a finger 34, so placed'that, when themagnet is energized, the tip of said finger catches the tip. of theextension 21 of the rows by appropriate frame-work 36, and to eachbutton is fixed a vertical stem 37 carryifiga shoulder 38 and a cone 39of insulating material. Each button is normally held up by a spiralspring 40. The lower ends of all the stems pass through'holes in a guideplate 41 of insulating material? Close toeach stem 37 a leaf spring 42is fixed in.

the guide plate 41, the top of each spring playing within an individualslot 43 ina movable resetting plate 44 extending under all the buttonsand provided with open-' ings through which the stems 37 pass. As

shown in Figs. 4 and 5, these springs lie.

immediately under the sides of the conical shoulders 38 and are soshaped as to catch over said shoulders when these latter are depressed.This is shown at the lowerside of Fig. 5 and the upper side of Fig. 4.It will thus be seen that, on pushing down any one of the buttons 35,its shoulder 38 will be caught by'its spring 42. On the .other hand,whenever the resetting plate 44 is moved upward in Figs. 4 and 5,.itsengagement with all the springs 42 will cause all these latter torelease any buttons which they may be holding down, so that all thebuttons resume their normal positions under the influence of the spiralsprings-40. I prefer to accomplish this function by means of theresetting magnets 45 supported under the two sides of the keyboard and,when energized, acting 'thin and the thick portions respectively of eachcone 39. All the longer spring terminals 47 are electrically connectedby thin .The calling buttons are supported in two 3O 8 to 11, and indiagram in rods or wires 48 in a single group, while the shorterterminals 49 are connected by wires 50, individually to their respectivepins 51 in the selecting'switch. (See Figs. and 7.) WVhere (as ispreferred) line sett ng means are employed, the wires 48 are connectednormally through said means to erably carries the movable member of theselecting switch. This is a spring arm 53 pauses: produced thereby,

arranged so that its tip sweeps over the tops of the pins 51 as theshaft 52 revolves, and this arm is so placed that it makes contact witheach pin, 51 at the same time that the corresponding tooth of the wheel18 is act- -ing to close the relay circuit at 12, 13. As

same number of pins 51' shown, there is the as of teeth on the wheel 18,viz.two more than the number of stations intended to beselectivelytalled. In theform shown, this is thirteen pins;

In order that the action of the automatic arrester may be discontinuedafter a proper time interval, thus limiting the duration of a freeing"device must be employed, and for this purpose I prefer to use theapparatus shown in Figs. Fig. 7. Here the casing 54=incloses a framework55 supporting a horizontal shaft 56 carrying a ratchet wheel 57 which isnormally impelled in the direction of the-arrow in Fig. 10, by thespiral spring 58. The electro-magnet 59 acts through the armature 60,bent spring 61 and Wire 62 to operate an impelling lever 63. Animpelling pawl 64 is pivoted to the end of the'lever 63 and is so placedthat, whenever energization of the magnet 59 permits the lever 63 tomove downward, said pawl will move the ratchet wheel 57 one toothforward. When the impelling pawl 64 rises, the retaining pawl 65 on thepivoted arm 66 acts on the teeth of the ratchet to prevent return tonormal under the influence of the spring 58.

For purposes described hereinafter, the lever 66 is carried on a shaft'67 capable of moving longitudinally upon the long journals shown inFig.9, thus permitting the pawl to be disengaged from the wheel 57 bylateral movement. The inclination 'of the shaft 67 facilitates returnmovement of the pawl over the wheel as hereinafter described and alsotends to keep the pawl alwaysgover the wheel whenit is intended to betller.

For the purposes described hereinafter-,it is desirable that the actionof the wheel 57 and its driving parts should be substantially asfollows. When the wheel is at norma and before any call is begun anyrapid impulses should produce only a back i and forth motion through thetooth. When a call is to be begun, a pause 59 being enand opposite the.taining paw space of one during an impulse (the magnet ergized) shouldprepare the wheel for action. Thereafter every impulse, whetherincluding a pause or not, should cause the wheel tomove forward one stepwithout backward movement, and this should con-' tinue until'as manysteps have as there are selectivefcallsin the particular System to beoperated, after which the wheel should return to its original or normalposi-' tion, in readiness for a new complete opera- In Fig. 11 therelative positions of the operative teeth, the impelling pawl and thebeen taken retalning pawl is one tooth farther advanced than the wheelcan be made to move (in an eleven station systen'i) without return tonormal. This position is chosen in order to expose all the teeth plainlyto view and make the following description more clear. At normal, thewheel 57 is so placed that the pawl 65 engages the square tooth 68, andthe next succeedingtooth' 69 is cut off shorter than the others, as shewn. The next ten teeth are square all the way down eleventh tooth Ilocate means for a tomatically displacing the reso as to permit theratchet This means may but I prefer to wheel to return to normal. takeavariety of forms,

make the same adjustable in position and to use the construction shownin Fig. 11.

An adjustable displacing plate 70 is revolubly mountedupon the shaft 56close to the wheel 57 and, as shown, this plate has a small lip whichprojectsover a tooth of said wheel. The plate 70 is provided with a camsurface, taking preferably the formof a recurved wing .71, and as therevolution of the wheel proceeds, this-cam surface is brought againstthe rear edge of the lever 66 at the proper time, so as to push thislever, with its inclined shaft, laterally away from the wheel 57. Thisfrees the wheel and permits it to return to normal. By use of'thisadjustable displacing means, which can be sprung laterally to free itfrom the teeth andthe'n revolved into any position around the wheeldesired, a given ratchetwheel of many teeth may be quickly prepared foruse in connection with. a system containing any desired number ofselective signals less than the total number of teeth. The pawl-carryinglever 66 is provided with an offset 72 so arranged with respect to thegravity hook 73,- pivoted 011 the shaft 74, that, when the pawl 65 israised above itsposition of engagement with the lower portion of anytooth, said hook drops under the offset 72 and prevents the pawl fromfalling back again to such lower position.

An arm 75 (see Figs. 9 and 10) fixed to the end of the shaft 74 isemployedas hereinafter described to. withdraw the hook 73 ,73 againcatches the shoulder 76. In this position the pawl is held too high tocatch on the low tooth 69. Now, the wheel 57 having thus returned tonormal and the pawl engaging the'tooth 68, it will be seen that, whenthe impelling pawl 64 moves the wheel forward one tooth, the pawl 65,being held up above the low tooth 69 by the hook 73, can not keep thewheel in the new position.

It will thus be seen that short impulses alone, however numerous, willnot carry the wheel 57 from normal position more than the distance ofone tooth. In order to permit the wheel to progress beyond thisdistance, the hook 73 must be prevented from acting upon the pawl, thuspermitting it to fall behind the short tooth 69 where it finds a surfaceof engagement which allows it to hold the wheel 57 and prevent return tonormail. In order that this result. may be produced by apause on thefirst electric impulse, I prefer the following mechanism. A transverserevoluble shaft 77 carries an arm 78 to the end of which is pivoted alight frame 79, at the lower end of which a small axle 80 is journaled.This axle is provided .with inertia wheels 81, and it rolls upon aninclined rodor track 82. Normally this system of levers and wheels isheld in the position shown in Fig. 10 by an arm.S3, attached to theimpelling-pawl lever 63 and whose end extends across the edges of theinertia wheels 81. (See. Fig. 9.) Each time the bent spring 61 raisesthe lever 63, the arm 83 moves toward the left in Fig. 10, thus slidingthe shaft 80 quickly. up the track 82 without causing the wheels 81 toturn. When the lever 63 is depressed in the act of impelling the ratchetwheel, the arm 83 frees the wheels 81 which, as they turn and cause theaxle 80 to roll slowly down the track 82, cause a slow downward movementof the arm 78 and a consequent revolution of the shaft 77.

The arm or lever 75 above described extends across the pathof the frame79. (See Fig. 9.) Thus, if the lever 63 is held depressed long enough,the frame 7 9 will'move far enough to the right to strike the lever;'75, and this will push the hook 73 away from the offset 7 2, thusfreeing the retaining pawl 65.- It is thus evident that, while a uick.electric impulse, producing a quick back and forth movement of thelever'63 and arm 83, will not permit .the frame to move far enough tostrike the arm 7 5 and free the pawl 65; a pause whereby thelover 63 isheld down for a sufiicient time will have this effect, and will thuspermit the pawl 65 to engage with the lower portions of the teeth asthey are successively brought into engaging position. v p The retardedmechanism above described for trippingthe arm 75 is preferably employeddirectly for opening the circuit of the arrester magnet 31, as follows-The frame of the freeing device above described is electricallyconnected by the wire 84: to the binding post .85, and onthis frame isfixed a contact terminal 86. A long spring 87 is attached to the shaft77, and is so placed and bent that its extremity normally touches theterminal 86 and that it does not leave the same until the end of thelongest movement permitted to the retarded 'mech anism as abovedescribed. This position is shown in dotted lines in Fig. 10. The longterminal is carried on nsulation 88 fixed to the shaft 77, and it iselectrically connected by a fine flexible wire 89 to an insulatedterminal 90 which is connected by the wire 91 with the binding post 92.Thus normally the terminals 86 and 87 are in contact, but, whenever" along impulse (including a pause) is transmitted through the magnet 59,these terminals are separated .and circuit is broken. I

Before describing the operation of the entire system it will be well .todescribe the two subsidiary devices which I have ;mentioned above asdescribed but not essential. These are the checking device and the linesetting device.

In Figs. 8 and 9 the casing 54 is shown. provided with a window, 93,through which may be seen a' dial 94, graduated and numbored. On anextension of the main shaft 56 is a pointer 95 whereby the number of the.tooth oppositewhich the retaining pawl is placed at any moment may beread on the dial. It will be noted that the first gradu-. ation on thedial is numbered zero. This corresponds to the position of the wheel inwhich the tooth 69 is opposite the pawl, and also to contact of thelever 53 (Fig. 7) with the first of the pins 51. The person operatingthe call has this dial before him, and he can tell, by noting thenumbers opposite which the needle pauses in itsprogress, whether or notthe desired stations arebeing called. Also, when a so-called answer}vback is combined in a well known manner with each selective signal,inspection of the dial will inform the operator just which station isanswering back at any moment. .The

the button placed opposite the word Set on the keyboard, althoughprovided with all the elements described as associated with the otherbuttons, and operated in the same manner, is providediwith an invertedcone 96 of insulating material. As clearly shown in Figs. 4 and 5, thespring terminals 97, 98 associated with this inverted cone-are normallyheld in contact by it, but when the cone is ,depressed by pushing downthe button, the spring 98, coming opposite the narrow end of the cone ispermitted to leave the terminal 97 and break circuit. This break isutilized, as' described below, for preventing action of the magnet 31.

In operating the system thus described any one or all of the stations onthe line may be called successively. Supposing it were desired to callstations 1 and 4, for instance, and to leave all otherstationsundisturbed. The operator will first depress the buttonsnumbered 1 and 4 and no others, and will then turn the handle 22 as faras it will go to the right in Fig. 1,.and release it. The main spring 15and toothed wheel 18. The first operation takes place when the arm 53touches the first pin 51 and the finger 19 has been lifted...

\Vhen the first pin 51 is reached by the arm 53, current-from battery 14passes by wire 28, connections 27 and 26, to the arm 53; thence from thepin 51 by wire 99 to springs .97, 98, wire 100, connections 101, magnet31,

- llne circuit its own circuit at 86, 87,

connections 102, wire 103,post 92, Wire 91, across the normallycontactlng terminals 86, 87, wire 84, post 85, and wire 104 back tobattery. At the same time a branch leaving the connections 26, 27,passes by terminals 12 and 13 and wire 29 to the magnet coils 59 in thefreeing device and to the battery 14. A branch of this branch passes bywire 30 to the relay 11, whereby the main is closed to all of theselective calls at once. The result'of these circuits is that, since themagnet 31 creates a pause making a long impulse, all the selective callsare prepared for action, and the freeing device acts to open the circuitof. magnet 31 at 86, 87. The-magnet 31 being thus made to free theautomatic sender, all the selectors having been prepared by a singlelong impulse, and the freeing device having opened the contacts 86, 87are made to action of the arm 83 upon the inertia wheels 81.' At thesame time the automatic sender starts up again. The arm 53 then touchesthe second pin 51 which is connected by a wire 50 with the contact 49under the button numbered 1. Inasmuch as this button has been pusheddown, the springs 47 and 49 are in contact, and, as closure of circuitrevolves the shaft 52, arm 53' backto normal come .together' again bythe at these springs has the same effect as closure at 9' 7, 98, (tracedabove) the magnet 31 and freeing "device will be-successively operatedas before, and every selective call on the main line will receive a longimpulse. 1sonly necessary, therefore, that the selectlve call at stationnumber one. should be adjusted, in a manner well known, to produce asignal when the pause occurs on the first impulse. The arm 53 nextpasses to pin number three, corresponding to station number 2. Since theparticular wire 50 which leads from this pinto the spring 49 underbutton number two (not depressed) is not' connected by contact between'its springs 4.9, 47, the

magnet 31, will not operate, and there will be no pause ,of the arm 53on this third pin. There will be a quick impulse delivered throughterminals 12,13, both to the freeing device and to all the selectingsignals, which will all move forward one. step, but without tion will beat once repeated for station number three, as the arm 53 sweeps over thefourth pin 51. When the arm reaches the fifth pin however, itscorresponding button (No. 4) having been depressed, the magnet 31 willact again, and the signal at station number four will be rung in thesame way as above described for number one. The arm 53 wil-Ithen sweeprapidly over the remaining pins, producing no operatio'n of the arresterbut carrying the freeing device and all the station signals withoutpause to the end of their possible movement at which point they allreturn automatically to normal. The arm 53 finally touches thethirteenth and last pin 51. This closes a circuit from battery 14, bywire 28, arm 53, pin 51, wire 105, resetting magnets 45, wires 106, and104 to battery thus energizing the magnets 45 and returning thedepressed buttons to the upper positions. This prepares the keyboard fora new operation.

The line setting button is used where, for any reason the variousselectors are believed or known to be out of correspondence. This mightoccur by one or. more ratchet wheels in different selectors catching ontheir way or by some accident or interference. In such a case the buttonmarked Set is depressed and the automatic sender-is operated. Since thecircuit of the arrester magnet 31 can only be closed through wires 48and springs 97, 98, it followsthat separation of these springs bydepressing the set button prevents produca pause. This last opera tlonof a pause at any point, whether or not any other of the buttons hasbeen depressed. Consequently, as the automatic sender moves, it willsend out only quick impulses over the line, whereby all of the selectorsare certainly brought to normal, preparatory to proper operation of thesystem. The line setting device can also be made useful sometimes forpreventing mistakes in 'calling; for, if, after starting the device, theoperator notices that he has depressed one or more wrong buttons, he hasonly to quickly throw down the set button to make all calls inoperativeand reset the keyboard after which he.can correct the adjustment andproceed.

In the drawings I have shown a single battery used for all purposes, butof course my invention covers the use of separate batteries in thedifferent circuits if desired, for which binding posts are shown on theleft side of Fig. 1. Indeed many changes can be made in the arrangementof circuits and in the mechanical construction as will be wellunderstood by those skilled in the art, without departing from myinvention.

What I claim is l. A device of the class described comprising in'combination an automatic sender of electrical impulses, an automaticarrester therefor, a pause controller, circuits connecting the-devicesaforesaid, and line setting means adapted to prevent operation of saidarrester at will, substantially as described.

4 2. A device ofthe class described comprising in combination anautomatic sender of electrical impulses, an automatic arrester therefor,a pause controller, a freeing device, circuits connecting the devicesaforesaid, and line setting means adapted 'to prevent operation of saidarrester at will, substantially as described.

3. A device of the class described comprising in combination anautomatic sender of electrical impulses, an automatic arrester therefor,a pause controller, circuits connecting the devices aforesaid, and meansfor altering said circuits at will for rendering the arresterinoperative, substantially as described.

4. A device of the class described comprising in combination anautomatic sender of electricaLimpulses, an automatic electromagneticarrester therefor, a pause controller comprising a number of switches,circuits connecting said switches with said arrester, and a line settingswitch for controlling all of said circuits, substantially as described.e

5. A device-of the class describedcomprising in combination an automaticsender of electrical impulses, an automatic arrester therefor, a pausecontroller, electro-mag-v netic resetting means for said pausecontroller and appropriate circuits for automatically operating saidresetting device after each operation of the automatic sender,.substantially as described. I

6. A device of the class described comprising in combination anautomatic sender of electrical impulses, an arrester therefor, anautomatic circuit breaker in'circu'it with said arrester, anelectro-magnet for controlswitch actuated by said sender, circuitsbetween said -switch and said magnet, and means operating only onprolonged energizing of said magnet for actuating said circuit-breaker,substantially as described.

7. A device of the class described comprising in combination anautomatic sender of electrical impulses, an arrester therefor, a freeingdevice for said arrester and a checking device for indicating theprogress .of said freeing device,'substantially as described.

8. A device of the classdescribed comprising in combination anautomatic. sender -of electrical iriipulses, an arrester therefor,

a freeing device for said arrester comprising a ratchet wheel and meansfor advanclng the same step by step, and a checking device comprising apointer actuated by said. ratchet wheel and a graduated dial behind saidpointer, substantially as described.

9. A device of the class described comprising in combination anautomatic sender .for normally producing electric lmpulses in rapidsuccession, clockwork including an escapement for actuating said sender,a de-' vice-for engaging said escapement to stop the clockwork, anelectro-magnet for controlling said last named device, manuallycontrolled circuit closers, a selecting switch moving with saidclockwork, and circuits connecting said devices to permit saidcircuitclosers and selecting switch to control the operation of saidmagnet, substantially as described.

10. In a system of the kind described,

an automatic sender of electricalimpulses,

a clock-work for actuating said sender ineluding an escapement having areciprocating extension, an electro-magnet near said clock-work, apivoted finger adapted to move into and outof the path of movement ofsaid extension, an armature for said ma'gnet arranged to actuate :saidfinger, "a c'ir cuit closer connected t-o'the clock-work and circuitsincluding said magnet and said cir cuit closer. 2

11.,-In a device of automatic sender of electrical impulses comthe classdescribed, an,

prisinga circuit closer and toothed wheel 7 for controlling the same,-a, switch arm adapted to turn with saidftoothed wheel, a 1

series of terminals over which said arm is adapted to move, anarresterfor the sender,

I 12. In combination with an automatic sender of electrical impulses andan arrester therefor, a pause controller comprising a series ofswitches, operating buttons therefor, a common resetting means for saidbuts for controlling it,

tons, an electro-magnet for actuating said means, and an automaticswitch operated by said sender in substantially as described.

13. In combination with an automatic sender of electrical impulses andan arrester therefor a pause controller comprising a series of switches,operatingbuttons therefor, a sliding resetting plate under saidbuttonsadapted when pushed to return them to normal, an electro-magnet havingits poles extending along the two sides of the pause controller buttons,a pivoted armature controlled by said magnet andadapted to push saidsliding plate, and means for energizing said magnet at the end of eachoperation of said sender, substantially as described. 14. In combinationwith an automatic sender of electrical impulses" and an arrestertherefor, a pause controller comprising pairs of spring terminals,buttons for controlling the same, a selectingswitch operated by saidsender of separate contacts, individual connections between one of eachpair-of spring terminals and a corresponding one of said separatecontacts, and a common electric connection between a single one-of saidcontacts and all the remaining spring terminals, substantially asdescribed.

15. In a system of the class described, a

pause controller comprising a row of airs of s' r111 terminals an oeratin "stem or each pair, each stem having a shoulder, a com-- mon'resetting plate through holes in which all of said stems pass,'s pringsnormally tending to lift said stems, means on each stem for actuatingthe spring terminals when the stem is depressed, and a leaf spring foreach stem each adapted to catch over the shoulder on its appropriatestem, said leaf springs engaging the common resetting plate,substantially as described.

16. In combination with an automatic sender of electrical'impulses, apause controller, a freeing device including an electro-magnet incircui-twith said sender, a ratchet wheel having one short tooth andimpelled by said magnet, a'retaining pawl,

a movable support normally causing said pawl to engage only the upperpart of the ratchet teeth, means adapted to act on prolongedenergization of said magnet to re- .lease said pawl from said support,and means for returning said ratchet wheel to normal after apredetermined movement of the freedevice. l

17. In combination with anautomatic sender of electricalim ulses,-anarrester and a pause controller, a Freeing device including anelectro-inagnctin circuit with said sender, a-ratchet whe'elhaving oneshort tooth and impelled by said magnet, a spring tending to return saidwheel to normal, a retainmg pawl normally engaging the tooth andcomprising a seriesan arrester and .net, a ratchet wheel net, a ratchetwheel described.

net to release said pawl from said support,

-and means actuated by said ratchet wheel at the end of its prescribedmovement for forcing the retaining pawl laterally out of engagementwith'the ratchet wheel, substantially as described. I

18. In combination with an automatic sender of electrical impulses, anarrester and a pause controller, a freeing device including anelectro-magnet in circuit with said sender, a ratchet wheel having oneshort -tooth and impelled by said magnet, a spring tending to returnsaid wheel to normal, a retaining pawl, a movable support normallycausing said pawl to engage only the upper part of the ratchet teeth,slow-moving means released by energizing said magnet adapted to releasesaid pawl from said support, a circuit-opening switch adapted to beoperated by said slow-moving means at the end of its complete movement,and means for returning said ratchet wheel to normal after apredetermined movement of the freeing device, substantially asdescribed.

19. In a system of the class described, a freeing device comprising animpelling magnet,. a ratchet wheel actuated thereby and having one shorttooth, a spring for return ing said wheel to normal, a retaining pawl, amovable support normally holding saidpawljust out of the range of saidsh'ort tooth, a retarded mechanism tending to move into position to freesaid pawl from said support and means actuated by said magnet for al-'ternately releasing and restraining said retarded mechanism andpermitting the same to act upon said support when the period of release.is sufficiently prolonged, substantially as described.

20. In a system of the class described, a freeing device comprising animpelling magactuated thereby, a spring for returning said wheeltonormal, a retaining pawl, a pivoted lever carrying said pawl andmounted so as to be laterally movable for releasing the wheel, andmeans' upon the side of the wheel adapted to impinge against said leverfor moving it laterally, substantially as described.

21. In a system ofthe class described, a freeing device comprising animp'elling magactuated thereby, a spring for returning said wheel tonormal, a retaining pawl, a pivoted lever carrying said pawl and mountedso as to be movable laterally to free said wheel, and adjustable meanssecured to the wheel for causing lateral movement of said'pawl,substantially as 22.In a system of the class described, a

freeing device comprising an impelling magadapted to cause lateralmovement of said net, a ratchet wheel actuated thereby, apawl byimpinglng against sald lever, sub- 9 spring for returning said wheel tonormal, it stantially as described. 4 retainin pawl, 21 pivoted leverciirryin said pen l and mounted so as to be movable W N GILL laterallyto free said Wheel and a plate piv- \Vitnesssz oted close to saidratchet Wheel upon its H. S. MACKA E, shaft and provided with aninclined portion M. A. BUTLER.

Cebies of this-patent inay be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G. H

